Improper input validation in Lhaplus

1) Input validation error

EUVDB-ID: #VU10007

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-2158

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform phishing attacks.

The vulnerability exists due to improper input validation, which can lead to unintended contents to be extracted from a specially specially crafted ZIP64 archive.

Mitigation

Update to version 1.74.

Vulnerable software versions

Lhaplus: 1.17 - 1.73

External links

http://jvn.jp/en/jp/JVN57842148/index.html
http://www7a.biglobe.ne.jp/~schezo/JVN57842148.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.